Mechanical properties of aluminum foam reinforced with recycled ceramic aggregates

Ajoku, Chinedu A.

doi:10.4314/njt.v38i2.7

Cited by 1 publication

(1 citation statement)

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“…Based on the polyvinyl-chloride foam core and glass-fiber face sheet, Patra and Mitra [13] performed an experiment to investigate composite sandwich materials. Ajoku conducted an experiment involving two different composites of aluminum foam formed through the powder metallurgy process with recycled ballistic aggregates added in regular and random patterns [14]. The mechanical properties of this composite were examined under compression loading by using a universal testing machine and image correlation then compared to the properties of aluminum and steel foams produced in the laboratory and found in the literature, respectively.…”

Section: Introductionmentioning

confidence: 99%

Creep Behavior of A356 Aluminum Alloy Reinforced with Multi-Walled Carbon Nanotubes by Stir Casting

et al. 2022

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Lightweight aluminum alloy components are often used to manufacture a variety of engineering components in many industries. In recent years, researchers have studied the effect of improving the mechanical properties of metal alloys by incorporating nano-carbon into its structure. In this study, the effect of the addition of 0.2, 0.5, and 1 wt% of multi-walled carbon nanotubes (MWCNTs) on the stress–strain behavior and creep phenomenon of an A356 aluminum alloy were studied. The effect of nickel coating on 0.2 wt% MWCNTs was also investigated. Samples were prepared using the stir-casting method. The results revealed that the grain size became finer when MWCNT nano-particulates were introduced. Although the MWCNTs were distributed homogeneously in the A356 matrix, as confirmed by FESEM analysis, there were some agglomerations observed in a specific area with dimensions smaller than 100 nm. Nevertheless, the addition of MWCNTs was found to be beneficial in enhancing the hardness of alloys containing 0.2 wt%, 0.2 wt% nickel-coated, 0.5 wt%, and 1 wt% MWCNTs by 9%, 24%, 32%, and 15%, respectively, as compared with the unreinforced A345 matrix. It was also found that the 0.5 wt% MWCNT-A356 matrix exhibited an improvement in the creep lifetime by more than two orders of magnitude.

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Section: Introductionmentioning

confidence: 99%